. there was never a hint of anyone going to jail. that is the truth pope benedict has to bear. >>professorstephenhawkingpublished a book on the most theoretical science. he explains why he believes that so-called m theory is the unified theory einstein was hoping to have. it settles de idea of where the universe came from. ♪ >> in this dream of finding a unifying theory of everything will make sense of our world from the infinitesimally small to the cosmological large. one such theory allows for numerous possible worlds, each with its own rules. stephen hawking who is director of research at the center for theoretical cosmology has swung his support behind this m theory. we have come to talk to professor hawking about m theory and ask him about the landscape of possible universities. how would he explain m theory to the many people in the u.k. will have little interest in theoretical physics? >> it is the theory of everything. it explains how the universe was created out of nothing. it governs everything we think we do. >> what exactly is m theory? it is just mask and can be thought of as an